Safety-torch



PATENTED JAN. 5, 1904.

0. 11. BROWN. SAFETY TORCH.

APPLIOATIONA FILED MAY 1, 1903.

30 MODEL.

v il/91h mom's ERS comnorcu'mu vim-marsh u I Patented January 5, 1904,

.ATENT FICE- CHARLES H. BROWN, OF PERRY, IOWA. I

SAFETY-TORCH.

SPECIFICATION formingpart of Letters Patent No. 748,839, dated January 5, 1904. Application filed May 1, 1903. Serial No. 155,165. '(lilo model.)

To all whom it may concern:

Be it known that 1, CHARLES H. BROWN, a citizen of the United States, residing at Perry, in the county of Dallas and State of Iowa,have invented certain new andv useful Improvements in Safety-Torches, of which the following is a specification.

This invention increases the safety of torches designed chiefly for use by miners and obviates waste of oil when the torch or lamp is first filled by providing an airspace in the top of the torch for reception of increase in the bulk of oil due to expansion when heated and combining with said airspace a vent tube or passage to prevent creation of pressure within the torch.

The invention consists, essentially, of an air-space formed bydepressing the central portion of the upper end of the torch and a vent in communication with said air-space by means of a curved tube or passage, the ends of the vent and said tube or passage being located at diametrically opposite points, whereby in holding the torch in a tilted position the oil will not run out.

The invention also consists of the novel elemental construction and combinations of parts, which hereinafter will be more particularly set forth, illustrated, and finally claimed.

In the accompanying drawings, forming a part of this specification, Figure 1 is a perspective view of a torch embodying the invention. Fig. 2 is a side elevation thereof, the upper portion being in section. Fig. 3 is a top plan view, the dotted lines indicating the curved air tube or passage.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

The torch or lamp 1 may be of usual or special design, and its upperend is centrally depressed, as shown at 2, and apertured, the latter having a longitudinal threaded boss 3 pendenttherefrom,which,in conjunction with the depression of part 2, results in the pro vision of annular space 4 at the upper end of the torch. Closure 5 is removably fitted in the central opening of end 2, being threaded into boss 3, and is hollow to provide space tube 9 and vent 8.

6 in its lower end, which supplements action of air-space 4. Ashoulder is formed between the upper end of the closure 5 and its hollow threaded end and sustains packing-ring 7, of lead or other material, employed for the securance of a T-joint between closure 5 and end 2.

Vent 8 communicates with annular air space or chamber i and connects at its lower end with air-tube 9, which occupies, approximately, the highest position of air-space 4 and terminates at a point about diametrically op-' posite to vent 8. Air tube or passage 9 is semicircular, as shown most clearly in Fig. 3, and may be formed with end 2 or be fitted thereto in any convenient way. By locating air tube or passage 9 about as indicated and extending same half-way around air-space 4: vent 8 always occupies a topmost position, so that in holding the torch tilted the oil will not run out.

When closure 5 is removed, the torch or lamp may be supplied with oil through the central opening, and when the level of the oil reaches the lower end of boss 3 the latter is sealed, thereby preventing filling of air space or chamber 4. The closure 5 is now replaced. When the torch is lighted or becomes heated from any cause and the oil expands, the air in space or chamber 4 is displaced to the extent of the increase in the bulk of oil or the amount of same entering space 4, the air being pressed in said space escaping through In the event of the bulk of oil contracting by cooling or through other cause the formation of a vacuum in the torch is prevented by air entering vent 8 and tubular passage 9, as will be readily understood.

While it is preferred to locate tube 9 on the inner side of closure or cover 5, yet it may be located on the outside thereof Without departing from the spirit of the invention.

; Having thus described the invention,-what is claimed as new is 1. In a torch ofithe character described, provided at its upper end with an annular air space or chamber surrounding a central opening, a vent, and an air tube or passage in communication at one end with said vent and at its opposite end with the said airspace at a point about diametrically opposite to the said vent, substantially as described.

2. A torch of the character described, having its upper end centrally depressed to provide an annular air space or chamber, a tube extending around approximately one-half of said space and in communication therewith at one end, and a vent in communication with the opposite end of said tube and extended through the end of the torch, substantially as described.

3. A torch of the character described, having its upper end centrally depressed, and provided in its center with an opening and a pendent boss surrounding said opening a closure fitted to said boss and having its lower end depressed or made hollow to form a chamber to supplement the action of the air space or chamber surrounding said boss, 20

a vent in communication with said annular space, and a curved tube or passage occupying a portion of said annular space and in communication with said vent at one end and terminating at its opposite end in said air- 25 CHARLES H. BROWN.

Witnesses:

H. A. HOYT, JOHN FJBRIGGLE. 

